CVE-2021-1437
High
Description
A vulnerability in the FlexConnect Upgrade feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, remote attacker to obtain confidential information from an affected device. This vulnerability is due to an unrestricted Trivial File Transfer Protocol (TFTP) configuration. An attacker could exploit this vulnerability by sending a specific TFTP request to an affected device. A successful exploit could allow the attacker to download any file from the filesystem of the affected access point (AP).
SeverityHigh
CVSS7.5
Exploit probability—
Product
Cisco Aironet Access Point Software
PublishedMar 24, 2021
First seenMar 24, 2021
Weakness typeCWE-275CWE-275
How to fix
Update
- cisco catalyst_9800_firmware17.3.3 or later
- cisco wireless_lan_controller_software8.10.142.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco aironet_access_point_software | No range specified | — |
| cisco catalyst_9800_firmware | 17.1 ≤ v < 17.3.3 | 17.3.3 |
| cisco wireless_lan_controller_software | 8.10.112.0 ≤ v < 8.10.142.0 | 8.10.142.0 |
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